package cn.wolfcode.service.impl;

import cn.wolfcode.domain.Exam;
import cn.wolfcode.mapper.ExamMapper;
import cn.wolfcode.qo.ExamItemObject;
import cn.wolfcode.qo.QueryObject;
import cn.wolfcode.service.IExamService;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class ExamServiceImpl implements IExamService {

    @Autowired
    private ExamMapper examMapper;


    @Override
    public void save(Exam exam) {
        examMapper.insert(exam);
    }

    @Override
    public void delete(Long id) {
        examMapper.deleteByPrimaryKey(id);
    }

    @Override
    public void update(Exam exam) {
        examMapper.updateByPrimaryKey(exam);
    }

    @Override
    public Exam get(Long id) {
        return examMapper.selectByPrimaryKey(id);
    }

    @Override
    public List<Exam> listAll() {
        return examMapper.selectAll();
    }

    @Override
    public PageInfo<Exam> query(QueryObject qo) {
        PageHelper.startPage(qo.getCurrentPage(),qo.getPageSize()); //对下一句sql进行自动分页
        List<Exam> exams = examMapper.selectForList(qo); //里面不需要自己写limit
        return new PageInfo<Exam>(exams);
    }

    @Override
    public Exam selectByExam(Long examId) {
        return examMapper.selectByExam(examId);
    }
}
